接口 CardResolver
- 所有已知实现类:
HttpCardResolver
public interface CardResolver
Interface for resolving and discovering AgentCard information in the A2A protocol ecosystem.
The CardResolver is a critical component that enables agent discovery and capability resolution
within the A2A protocol. It abstracts the process of obtaining AgentCard information, which
contains essential metadata about an agent's capabilities, endpoints, and communication
requirements.
Key responsibilities:
- Discover and retrieve AgentCard information from various sources
- Parse and validate agent capability metadata
- Handle different agent identification schemes (URLs, DIDs, custom identifiers)
- Provide caching and optimization for repeated lookups
- Support various discovery mechanisms and protocols
Discovery mechanisms may include:
- HTTP-based discovery via well-known endpoints (/.well-known/agent.json)
- Decentralized Identifier (DID) resolution
- Registry-based lookups
- Direct configuration or injection
- DNS-based service discovery
The AgentCard contains crucial information such as:
- Agent capabilities (streaming, push notifications, etc.)
- Supported communication endpoints and protocols
- Authentication and security requirements
- Available skills and services
- Version and compatibility information
Implementation considerations:
- Error handling for network failures and invalid responses
- Caching strategies to minimize repeated network calls
- Security validation of retrieved agent information
- Support for different agent identifier formats
- Graceful degradation when discovery fails
Implementations should be thread-safe and handle concurrent resolution requests
efficiently, particularly in high-throughput scenarios.
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方法概要
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方法详细资料
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resolveCard
AgentCard resolveCard()Resolves the AgentCard for the configured agent. This method retrieves and returns the AgentCard containing the agent's capabilities, endpoints, and metadata. The resolution process depends on the specific implementation and the agent identification mechanism used.- 返回:
- AgentCard containing agent information, or null if resolution fails
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